While I very much appreciate and respect author's detailed analysis, I am still not 100% convinced without a corresponding benchmark result. If it's really O(lo

While I very much appreciate and respect author's detailed analysis, I am still not 100% convinced without a corresponding benchmark result. If it's really O(log n) vs O(1), it should be very easy to verify in some micro-benchmark. Instead of that, the author mentioned that: > The tests that I did run, initially the libstdc++ and the libc++ versions have roughly the same performance, but the performance diverges after a number of insertions somewhere between 6,400 and 12,800. After that the runtime of the libc++ version is roughly 2-3 times that of the libstdc++ version. (...) the outcomes of which depend on the compiler version anyway. This does not seem right.